Hello friends, in this article I am going to tell you what is ring counter? the working of the ring counter. so let’s start
What is Ring Counter?
The ring counter is a circular shift register that is initialized in such a way that only one flip-flop is state-1. Everything else is in the 0 -state. A ring counter has n flip-flops and n-states.
A 4-bit ring counter is shown in the figure, which has a 4-flip-flop and will have 4- states. The output of Q, the last flip-flop, is connected to the first flip-flop. Hence it produces a ring-like structure. When a single ‘1’ is entered into the ring, it is successively shifted to the ring on the clock cycle. That is, when a clock pulse is mounted, a ‘1’ is shifted to an adjacent, flip-flop. it is called a ring counter.
The waveform of a 4-bit ring counter is shown in Figure 2.
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Working of Ring Counter
1. Initially 1, the first flip-flop will be preset in FF1 and the remaining flip-flop will be cleared. In this case, the counter will show 0001.
2. On application of the first clockwise pulse, 1 will shift to the second flip-flop FF 2 and will output Q,=1 and the second flip-flop will be reset. In this case, the counter will show 0010.
3. On the second clock pulse, the 1st third flip-flop will shift to FF3, and output 2 = 1, and the second flip-flop will be reset. In this case, the counter will show 0100.
4. Similarly the third clock pulse does a 1 shift on the output ring of the fourth flip-flop FF4. In this case, the counter will show 1000.
5. The cycle starts on the 4th clock pulse and 1 is back to the first flip-flop FF1 and now the counter is in the starting state 0001.
This process is thus iterated on a subsequent clock pulse. The above process can be demonstrated from the timing diagram (Figure 2). From this timing diagram, the frequency of the output waveform of each flip-flop is one-fourth of the clock frequency in the ring counter.
The truth table of the ring counter is displayed as follows.
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Now you must have known that what is Ring Counter?, Working of Ring Counter. You must have got a good knowledge of this subject.